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awk to calculate timex output

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# 1  
Old 08-17-2012
awk to calculate timex output
I have a
Code:
timex

'dd' command that generates an output similar to this:

Code:
real 701.92
user 3.06
sys  469.10

for the moment, i m redirecting the output to a temp file to stage the calculation (using bc) for:
a) MB/s
b) cpu usage = 100*(user+sys)/real

I am looking around for an 1-liner
Code:
awk

to do the same, hopefully. Thanks in advance.

---------- Post updated 08-17-12 at 02:27 AM ---------- Previous update was 08-16-12 at 09:31 AM ----------

Got it working with this snippet:

Code:
    +1  #!/bin/ksh
    +2  cat timex2.out | \
    +3  awk '{
    +4  if ($1 ~ /real/) real=$2;
    +5  else if ($1 ~ /user/) user=$2;
    +6  else if ($1 ~ /sys/) sys=$2;
    +7  } END {
    +8  print 6144/real " MB/s " 100*(user+sys)/real "%" ;
    +9  }'

Last edited by ux4me; 08-17-2012 at 04:26 AM..
# 2  
Old 08-17-2012
Quote:
Originally Posted by ux4me
I am looking around for an 1-liner awk to do the same, hopefully. Thanks in advance.
Code:
$ awk -vRS= '{printf("%.1f MB/s %.1f%%\n",6144/$2,100*($4+$6)/$2)}' timex2.out
8.8 MB/s 67.3%

This User Gave Thanks to neutronscott For This Post:
ux4me
# 3  
Old 08-20-2012
What if I want to substitute 6144 with a shell variable? For example:

Code:
fsize=6144

How would I pass the fsize variable into this 1-liner?

Code:
awk -vRS= '{printf("%.1f MB/s %.1f%%\n",6144/$2,100*($4+$6)/$2)}' timex2.out

Please advise and thanks again.
# 4  
Old 08-20-2012
Code:
awk -vRS= -vfsize="$fsize" '{printf("%.1f MB/s %.1f%%\n",fsize/$2,100*($4+$6)/$2)}' timex2.out

This User Gave Thanks to elixir_sinari For This Post:
ux4me
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